Configurable, 10A Dual-Phase Sub-PMIC for High-Performance Mobile Processors and Memory
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Overview
Description
The DA9121 is a sub-PMIC suitable for supplying CPUs, GPUs and DDR memory rails in smartphones, tablets, RF modules, and other handheld applications.
DA9121 operates as a single-channel dual-phase buck converter, each phase requiring a small external 0.10μH inductor. It is capable of delivering up to 10A of output current at a 0.3V to 1.9V output voltage range. The 2.5V to 5.5V input voltage range is suitable for a wide variety of low voltage systems, including, but not limited to, all Li-ion battery-supplied applications.
Benefits
- Input voltage range provides flexibility to run from single-cell Li-ion battery or standard 3.3V or 5V system rail
- Differential voltage sensing provides tight regulation accuracy requirements of CPU cores in mobile SoCs
- 4MHz switching frequency reduces footprint and height of output inductor and minimizes output capacitance, lowering BOM cost
- Triggered through either an I2C or GPIO interface, output dynamic voltage control can be used to optimize system power consumption
Features
- 2.5V to 5.5V input voltage
- 0.3V to 1.9V output voltage
- 4MHz nominal switching frequency
- ±1% accuracy (static)
- ±5% accuracy (dynamic)
- I2C-compatible interface (FM+)
- Configurable GPIOs
- Programmable soft-start
- Voltage, current, and temperature supervision
- -40 °C to +85 °C ambient temperature range
- Package: 24-WLCSP (2.5mm x 1.7mm, 0.4mm pitch)
Applications
| Wired & Wireless IEEE 1588 Solution | |
| Wireless Digital Signage | |
|
5G Customer Premise Equipment (CPE) Solution |
Applications
- Smartphones
- Tablets
- Notebook PCs
- RF modules
- Solid-state drives
- Hard disk drives
- Game consoles
- Handheld devices
Documentation
| Document title | Document type Type | Date Date | |
|---|---|---|---|
| PDF 1.36 MB | Datasheet | ||
| PDF 460 KB | Application Note | ||
| PDF 1.21 MB | Manual - Development Tools | ||
| PDF 782 KB | Product Brief | ||
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| 24 WLCSP | Tape & Reel |
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